18V slide batteries

Very short use before depleting, long time to charge. I have two batteries one year old that will not charge at all anymore. I have two $38 doorstops. Reading Google reviews I see I am not alone in my dislike of your batteries. What can I do to replenish or replace these things. I've always loved your tools, but if this battery is what represents B and D, I'm off to visit DeWalt and Mikita.